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A 3D numerical study to evaluate optimum collector inclination angle of Manzanares solar updraft tower power plant
Solar Energy ( IF 6.0 ) Pub Date : 2021-08-31 , DOI: 10.1016/j.solener.2021.08.062
Sajjan Raj Keshari , Chandramohan V.P. , Pritam Das

In this paper, a three-dimensional turbulent study was carried out on Manzanares (Spain) plant to study the effects of collector inclination angle (θ). Different ranges of θ (30–0°) with more than 15 models were considered for the analysis. An optimized θ has been proposed based on the estimated parameters such as air velocity, pressure drop, absorber and air temperatures, power developed, collector efficiency, and overall efficiency (ηcoll and ηo). At θ = 6°, an increment of 9.16% in theoretical power (Pth) and a 10.68% increase in air velocity were observed at the chimney base (CB) compared to the horizontal collector plant. Any further increase in θ (greater than 7°) resulted in recirculation of air particles within the collector canopy, leading to obstruction of flow. Any value of θ lesser than 6° resulted in a drop in the major outputs such as Pth, ηcoll, and ηo. Eventually, θ = 6° has been proposed as optimized inclination. The dynamic pressure difference was maximum at a chimney height of 2.5 m from CB; therefore, this was the preferred location for turbine fitment. The results were compared with the experimental data of the Manzanares plant, and a very favorable agreement was noticed.



中文翻译:

评估曼萨纳雷斯太阳能上升气流塔式电站最佳集热器倾角的 3D 数值研究

在本文中,对 Manzanares(西班牙)工厂进行了三维湍流研究,以研究集热器倾角 ( θ ) 的影响。分析时考虑了超过 15 个模型的不同范围的θ(30-0°)。已根据空气速度、压降、吸收器和空气温度、产生的功率、收集器效率和整体效率(η collη o)等估计参数提出了优化的θ。在θ  = 6° 时,理论功率增加 9.16% ( P th) 并且与水平收集器设备相比,在烟囱底部 (CB) 观察到的空气速度增加了 10.68%。θ 的任何进一步增加(大于 7°)都会导致收集器顶篷内的空气颗粒再循环,从而导致流动受阻。任何小于 6°的θ值都会导致主要输出(例如P thη collη o )的下降。最终,θ = 6° 已被建议为优化倾角。烟囱高度为 2.5 m 时,动压差最大;因此,这是安装涡轮机的首选位置。将结果与 Manzanares 工厂的实验数据进行了比较,发现了非常好的一致性。

更新日期:2021-09-01
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